This, of course, is hot off the news earlier today of the new fossil Pokémon (a T-rex and a brontosaurus), a bipedal cat with gender-specific forms, a poodle with customizable fur, the first evolutions to all three starters, the Eva/Kaiju-esque MEGA GARCHOMP, and yet another Mega Mewtwo form (so there's one for X, and one for Y).

Kudos to DaBoss for playing with the URL to uncover this at IGN.

UPDATE: Official Sugimori art! Confirmed to be the Fire/Normal-type evolution of Litleo!